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Cardiff Bay to Southampton Train prices and times

Use Trip.com to buy tickets from Cardiff Bay to Southampton, starting from US$32.25 and averaging US$81.17. The entire journey takes no more than 2h 38m. If you want to get a greater discounts, consider purchasing split tickets. Additionally, buying in advance is also good choice.

View More Trains

Departure	Arrival	Operator	Find Tickets
23:54 8h 45m, Changes required Cardiff Bay	08:39 +1 Southampton Airport Parkway		Find Tickets
23:54 9h 8m, Changes required Cardiff Bay	09:02 +1 Paris		Find Tickets

Cardiff Bay to Southampton Train Route Details

First train

07:08

Last train

23:54

Departure station

Cardiff Bay

Arrival station

Southampton

Journey time

2h 38m

Distance

138 km

Price

US$32.25*

Train operators

CrossCountry, Great Western Railway, South Western Railway

How to book cheap train tickets from Cardiff Bay to Southampton

Traveling in off-peak train times

Taking advantage of Off-Peak train tickets is another effective way to save on your train journey from Cardiff Bay to Southampton. These tickets are generally cheaper and can be used during quieter periods, typically outside of morning (6:30 AM–9:30 AM) and evening (4:00 PM–7:00 PM) rush hours on weekdays.

Get 1/3 off with a Railcard

You can choose a Railcard to help you save up to 1/3 on fares from Cardiff Bay to Southampton for various reasons, such as your age (including the 16–25 Railcard or Senior Railcard) or options geared towards group travel (Family & Friends Railcard and Two Together Railcard). Discover more here.

Split tickets to save an average extra 30%

Splitting tickets is a perfectly legal practice that involves purchasing separate, cheaper tickets for different segments of your journey on the same train instead of a single ticket for the entire trip. For example, if you are travelling from Cardiff Bay to Southampton, you might discover that buying a ticket from A to C, and then another ticket from C to B, is more economical than a direct ticket.

Book in advance to save an average of 61%

Did you know that purchasing Advance Tickets can significantly reduce your travel expenses? On average, these tickets can save you an impressive 61% on fares. The best part is that the earlier you book (ideally up to 12 weeks in advance), the greater the savings!

Travel in a group to save 1/3

If you are traveling in a group, be sure to check out group travel discounts. Many train companies offer a ⅓ off standard fares for groups of three to nine people, making traveling from Cardiff Bay to Southampton more affordable for families, friends, or colleagues planning a trip together.

Cardiff Bay to Southampton train ticket types

Here are different ticket types available for this route, each with their own benefits and restrictions. Here are the options to consider:

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Why Book Train Tickets With Trip.com?

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If you find trains for a cheaper price elsewhere, let us know and we'll refund the difference*
Split Tickets
Save an average of 30% on train fares by splitting your Cardiff Bay to Southampton journey
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*After comparing the full year of 2023 for SplitTickets and full-price tickets on Trip.com, the average savings rate for SplitTickets is 30%.

Trains from Cardiff Bay to Southampton from US$32.25

Save an average of 30%* with SplitTickets

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Cardiff Bay to Southampton Train prices and times

Cardiff Bay to Southampton Train Route Details